Perpetual calendar clock

D137. A large and impressive 3 dialled black and brown marble mantel clock with bronze and gilded mounts which displays the age of the moon and the equation of time. Circa 1870. The clock, which is decorated with gilt and bronze, is surmounted by a sphere and two urns. To either side are foliate mounts and ring carrying handles and the clock rests on eight turned brass feet.

The top main dial, with roman numerals, has a recessed centre displaying the Brocot visible escapement for the bell striking movement, which is numbered 6491.The dial is surrounded by an elaborate gilded bezel.

To the bottom left is the calendar dial. To the outside of this are shown the months of the year and within this the Equation of Time is given, i.e the difference between solar and mean solar (our ) time. Also marked are the times of the solstices and equinoxes. To the top of the recessed centre is a revolving moon set against a star-studded blue sky. To the left are the days of the week and on the right the days of the month. To the bottom is a small dial for the four year cycle. To the bottom right of the case is an anaeroid barometer with the centre cut out to reveal the movement.